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Finding the Fourth Proportional to 13,671.76, 18,858.36 and 8,627.17

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Solution

The fourth proportional to 13,671.76, 18,858.36 and 8,627.17 is: 11,900.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.76 : 18,858.36 = 8,627.17 : x
  2. Step 2: Convert to fraction form
    13,671.76/18,858.36 = 8,627.17/x
  3. Step 3: Cross multiply
    13,671.76x = 18,858.36 × 8,627.17
  4. Step 4: Simplify right side
    13,671.76x = 162,694,277.64
  5. Step 5: Solve for x
    x = 162,694,277.64/13,671.76
  6. Step 6: Final answer
    x = 11,900.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.